Struct DropRoleStatement 

pub struct DropRoleStatement {
    pub role_names: Vec<String>,
    pub if_exists: bool,
}

DROP ROLE statement builder

Examples

use reinhardt_query::dcl::DropRoleStatement;

let stmt = DropRoleStatement::new()
    .roles(vec!["user1".to_string(), "user2".to_string()])
    .if_exists(true);

Fields

role_names: Vec<String>

Role names to drop

if_exists: bool

IF EXISTS clause

Implementations

impl DropRoleStatement

pub fn new() -> Self

Create a new empty DROP ROLE statement

Examples

use reinhardt_query::dcl::DropRoleStatement;

let stmt = DropRoleStatement::new();

pub fn role(self, name: impl Into<String>) -> Self

Add a single role name to drop

Examples

use reinhardt_query::dcl::DropRoleStatement;

let stmt = DropRoleStatement::new()
    .role("app_user");

pub fn roles(self, names: Vec<String>) -> Self

Set all role names to drop at once

Examples

use reinhardt_query::dcl::DropRoleStatement;

let stmt = DropRoleStatement::new()
    .roles(vec!["user1".to_string(), "user2".to_string()]);

pub fn if_exists(self, flag: bool) -> Self

Set the IF EXISTS flag

Examples

use reinhardt_query::dcl::DropRoleStatement;

let stmt = DropRoleStatement::new()
    .role("app_user")
    .if_exists(true);

pub fn validate(&self) -> Result<(), String>

Validate the DROP ROLE statement

Validation Rules

1. At least one role name is required

Examples

Valid statement:

use reinhardt_query::dcl::DropRoleStatement;

let stmt = DropRoleStatement::new()
    .role("app_user");

assert!(stmt.validate().is_ok());

Invalid statement (no role names):

use reinhardt_query::dcl::DropRoleStatement;

let stmt = DropRoleStatement::new();
assert!(stmt.validate().is_err());

Trait Implementations

impl Clone for DropRoleStatement

fn clone(&self) -> DropRoleStatement

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DropRoleStatement

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DropRoleStatement

fn default() -> DropRoleStatement

Returns the “default value” for a type.